The Drug Enforcement Administration has agreed to pay 14 contractors $500,000 to settle a lawsuit that accuses the agency of illegally requiring them to undergo highly intrusive lie detector tests to keep their jobs as translators.

The nation’s spy satellite agency failed to notify authorities when some employees and contractors confessed during lie detector tests to crimes such as child molestation, an intelligence inspector general has concluded.

Intelligence officials are pushing to classify as secret certain information about lie detectors that they believe U.S. adversaries might use to harm national security, even though much of it has been available to the public for decades.

Prosecutors are asking a federal judge to send a “strong message” by sentencing an Indiana Little League coach to prison for trying to teach as many as 100 people across the country how to beat lie detector tests.

Federal agents have launched a criminal investigation of instructors who claim they can teach job applicants how to pass lie detector tests as part of the Obama administration’s unprecedented crackdown on security violators and leakers.

When polygrapher Walt Goodson began moonlighting for a private company, he didn’t think the law enforcement agency he worked for would care. After all, his supervisor had worked for his company’s competitor and had approved his outside job. But after investigators found Goodson’...

Police departments and federal agencies across the country are using a type of polygraph despite evidence of a technical problem that could label truthful people as liars or the guilty as innocent, McClatchy has found. As a result, innocent people might have been labeled criminal suspects, faced...